Geomembrane (Geomembrane) is an insulator with a permeability coefficient of zero or close to zero, the main component of which is polyethylene. In recent years, the use of geomembrane insulation has become very popular, the main reasons for which are easy installation, cost-effectiveness, and cost reduction. The application of geomembrane sheets is so wide that it has become common to use it in sealing pools, buildings, tunnels, etc.
What are geomembranes?
Geomembrane is an insulating and covering sheet that is used to waste fluids such as water; Today, geomembranes are considered one of the most widely used geosynthetic materials. Geomembranes are polyethylene sheets that are used in man-made projects and systems to control fluid penetration. From a structural point of view, it can be said that geomembrane sheets are composed of thin layers of polymer, which has caused them to be used in various fields such as construction projects, environmental projects, transportation, waste industry, and oil and gas.
Maybe this can be generally stated that geomembrane sheets are used in environments where the loss of liquids and gases must be prevented. For example, geomembrane sheets can be used in projects where the waste of clean water, hazardous materials, gas, sewage, etc. should be avoided. Most of the time, the waste of any of the mentioned items will bring a heavy cost to the projects, which is prevented from happening.
What are the advantages of geomembrane sheets?
Geomembrane sheet is a type of impermeable covering of synthetic materials that is used to control or reduce the flow of liquids or gases in geotechnical engineering projects, structures or systems. These products are usually made of various polymer resins such as high density polyethylene (HDPE). ) and linear low density polyethylene (LLDPE) are formed. They have several properties that make them suitable for many environmental and geotechnical applications.
Types of geomembrane sheets
PVC geomembrane: PVC geomembrane is a type of polyvinyl chloride waterproof sheet that is produced from the combination of vinyl compounds, softeners and stabilizers. This sheet has outstanding properties such as flexibility, resistance to corrosion, water and UV rays. This sheet can be made into different shapes by various methods such as extrusion, welding or gluing and can be used for various purposes such as water protection, environment, mining, agriculture and construction. PVC geomembranes can be divided into two main types: reinforced and It is not divided. The reinforced geomembrane has a layer of fabric or fiberglass in the middle of the sheet, which increases its tensile, tearing and bending resistance; This type of sheet is suitable for cases that require high resistance. Non-reinforced geomembranes consist only of PVC layers and will be suitable for cases that require high flexibility; This type of product can be easily cut and welded into complex shapes. HDPE geomembrane: HDPE geomembrane sheet is an impermeable cover of high density polyethylene polymer used for projects Geotechnical and environmental engineering that need to protect and prevent pollution is used. These sheets have outstanding mechanical and chemical properties, high resistance to heat and aging, UV rays and stress cracking. The HDPE model is produced with pure resins and does not have any fillers, external additives or plasticizing agents. HDPE geomembrane sheets are used in various industries such as mining, oil and gas, infrastructure, aquaculture, agriculture and marine. These sheets are used as a cover for sedimentation ponds, flocculation piles and other structures containing various materials. Also, they are necessary to prevent leakage of pollution to the surrounding environment and to ensure compliance with environmental regulations.
LLDPE geomembrane: LLDPE geomembrane is a type of polymer from the polyethylene family that is produced from virgin polyethylene resins. This type of geomembrane has high flexibility and excellent resistance to low temperature and ultraviolet radiation; It is also designed with quality and economy for a long life and shows a high degree of strength and durability. On the other hand, LLPDE geomembranes are suitable for cases that require more flexibility and elasticity. The superior tensile properties of this sheet make it a suitable solution for projects that need to adapt to the shape and curvature of the earth. The benefits of LLDPE geomembranes include superior flexibility, UV and chemical resistance, puncture resistance, performance and durability. Also, common applications of LLDPE geomembranes include irrigation ponds, canals, water tanks, cells, liners, landfill caps, sewage ponds, and treatment plants.
< b>EPDM geomembrane: EPDM geomembrane sheet is a flexible and resistant material made of ethylene propylene diene monomer; Due to its anti-ultraviolet, anti-ozone, anti-oxidation and anti-weather properties, this material is suitable for projects that require sealing. Also, EPDM sheet ingredients are harmless to fish and plants and are mainly used for fisheries, rain management and mining.
RPP geomembrane:RPP geomembrane sheet is a reinforced polyester material designed for water protection purposes. This material has very good chemical resistance and will be suitable for long-term use in buried or accessible areas. Also, this sheet is reinforced with a nylon fabric to create high stability and strength. RPP geomembrane is very flexible, resistant and anti-UV. Applications of RPP geomembranes include irrigation ponds, canals, reservoirs, landfills, agriculture, urban, aquaculture and horticulture, liners, drinking water tanks, salt water, processed water and wastewater. Installation of RPP geomembranes requires special welding equipment and experienced technicians to ensure its quality and performance. Also, this sheet is recyclable and can be beneficial for the environment.
TRP geomembrane: TRP geomembrane sheet is made of polyethylene fabric, which is used to store water and industrial waste in It will be suitable for a long time. TRP geomembrane has chemical resistance, UV stability and low temperature range. Also, this sheet is a good choice for soil improvement, landfills, canals, temporary pools, and agricultural and urban industries.